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st: -svy stocx- attained age

From   "Muhuri, Pradip (SAMHSA/CBHSQ)" <>
To   "" <>
Subject   st: -svy stocx- attained age
Date   Wed, 31 Jul 2013 16:53:41 +0000


I am new to the Statalist. In response to my first posted e-mail to the List, and I got a reply from Steve, with insightful comments and advice.  At this point, I need your help with two issues.

1) All my subsequent e-mails (content --copied from the Stata log file - in plain text, not html) have bounced back to me. I don't understand what I am doing wrong. 

2) I am using -svy:stcox- models, with attained age as the time scale. I have successfully run several models. However, the addition of a 5-category factor (attained age) to the model gives me the following error message: "flat region resulting in a missing likelihood error occurred when svy executed stcox last estimates not found".  Sorry I am not pasting the content from the log file, fearing that this e-mail will also bounce back. 



Pradip K. Muhuri, PhD
1 Choke Cherry Road, Room 2-1071
Rockville, MD 20857
Tel: 240-276-1070
Fax: 240-276-1260

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